The mantle layer of the earth possesses the greatest thickness. It extends from the Mohorovicic Discontinuity, which is found beneath the crust, to a depth of about 2900 km.
The mantle is the second layer of the earth, which lies beneath the crust. It is about 2900 km thick and is composed mainly of silicate rocks that are rich in iron and magnesium.
The mantle has the greatest thickness of all the layers of the earth.The mantle is further subdivided into the upper mantle and the lower mantle. The upper mantle extends from the crust to a depth of about 660 km.
It is composed of the lithosphere, which is the rigid outer layer, and the asthenosphere, which is the soft, plastic layer beneath it. The lower mantle lies beneath the upper mantle and extends from a depth of about 660 km to 2900 km.
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which global warming feedback listed below is one of the main reasons for the amplified warming we see in polar regions
The main reason for the amplified warming we see in polar region are due to ice-albedo feedback.
The ice-albedo feedback is a process in which changes in the Earth's surface albedo (reflectivity) cause changes in the amount of solar radiation absorbed by the Earth's surface, resulting in further changes in surface albedo.
As ice and snow cover recedes, so does the surface albedo, causing more solar radiation to be absorbed by the Earth's surface. This causes increased melting of ice and snow, which reduces surface albedo even further, and so on.
Changes in the extent of ice and snow cover can affect the amount of solar radiation absorbed by the Earth's surface, global temperature, and weather patterns, which can have a significant impact on the Earth's climate system.
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The complete question:
Which global warming feedback listed below is one of the main reasons for the amplified warming we see in polar regions?
a. The Stephan-Boltzmann feedback
b. The water vapor feedback
c. The ice albedo feedback
d. The lapse rate feedback
One of the main reasons for amplified warming in polar regions is the ice-albedo feedback. This feedback mechanism plays a significant role in global warming and contributes to the rapid warming observed in these areas.
The ice-albedo feedback involves a change in the amount of solar radiation absorbed by the Earth's surface due to changes in ice cover. Ice and snow have a high albedo, which means they reflect a large portion of incoming sunlight back into space.
As global temperatures rise, more ice melts, exposing darker surfaces like water and land, which have lower albedos and absorb more sunlight. This additional absorbed heat causes further warming and more ice melt, creating a positive feedback loop that accelerates temperature increases in polar regions.
This process is particularly impactful in the Arctic, where sea ice loss has been significant. As the ice melts, the exposed ocean water absorbs more heat, further raising temperatures and melting even more ice. This amplification of warming in polar regions has wide-ranging consequences for global climate systems, as it can affect ocean circulation patterns, weather events, and ecosystems.
In summary, the ice-albedo feedback is one of the primary reasons for amplified warming in polar regions. This mechanism is a result of the increased absorption of solar radiation due to melting ice, which creates a positive feedback loop that accelerates temperature increases and contributes to the significant warming observed in these areas.
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Why were transport ships ineffective in WW2
Answer: During the Second World War, Britain depended on vital supplies of food, equipment and raw materials from overseas, notably from North America and the Empire. These goods were transported in thousands of merchant ships, which were vulnerable to attack by German submarines (U-boats)
Explanation:
if a mountain range has forest on the western slope and desert on the eastern slope, what is the direction of the prevailing winds? west to east east to west north to south south to north
If a mountain range has forest on the western slope and desert on the eastern slope, the direction of the prevailing winds is from west to east.
Prevailing winds refer to the global winds that blow in specific directions over a given region. They result from the movement of air masses from high-pressure zones to low-pressure zones.
Prevailing winds have an impact on the climate of a given region. The direction of the prevailing winds is determined by the rotation of the earth, the distribution of land and water, and temperature differences between the equator and poles.
The direction of prevailing winds changes with the season. Prevailing winds have an impact on the climate of a given region.
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what is itcz and how does the wind blow in itcz, including surface wind, upper-level wind, and the vertical air movement that connnecting them?
The Intertropical Convergence Zone (ITCZ) is a region near the Earth's equator where trade winds converge. The region is also characterized by cloudy skies, rainy weather, and low pressure.
The ITCZ's location varies seasonally, moving north or south of the equator depending on the location of the sun. The ITCZ's position is determined by the location of the sun, which is directly overhead at noon at the equator, causing the air to rise and creating a low-pressure region.
As the air rises, it cools and condenses, resulting in rain and thunderstorms. The ITCZ's surface winds are the trade winds, which move towards the equator from the northeast in the Northern Hemisphere and the southeast in the Southern Hemisphere.
The upper-level winds are known as the easterly winds, which blow from east to west. They are responsible for bringing moisture from the Atlantic and Indian Oceans to the ITCZ. The vertical air movement is the convergence of the trade winds, which causes air to rise and creates a low-pressure zone.
The rising air cools and condenses, resulting in the formation of clouds and precipitation. As a result, the ITCZ is responsible for much of the Earth's precipitation.
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